Orange and Cardamom Scottish Shortbread with Cinnamon and Vanilla

Method

1. Add orange zest and ground cardamom to the mixing bowl with cinnamon and vanilla, then proceed as directed.
2. Preheat oven to 170°C (325°F).
3. In a mixing bowl, cream butter and sugar until light and fluffy.
4. Mix in cinnamon, vanilla, flour, and salt until dough forms.
5. Roll dough into a log, wrap in parchment, chill 1 hour, then slice and bake 15-20 minutes.